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hi,please check if this site is not block in your office laptop,because i did some setting on a the laptop that can block certain sites anyway ask the system administrator if he or she block this site, if yes then that it only they can unblock it,if no then you should check is one or more program is blocking access.
Resetting the original administrator account password
Follow these steps to reset a password when there is only one
administrator account on the computer, or if the original administrator
account needs a password reset. "Original" administrator account refers
to the one that was created immediately after installing Mac OS X. If
the original administrator password is known, that administrator
account may be used to reset the passwords of other administrator
accounts using the steps described above.
Start up from a Mac OS X Install disc (one whose version
is closest to the version of Mac OS X installed). Usually, you can
start from the disc by putting it in your computer, restarting, and
holding the C key. Or, put it in the computer and click the Install or
Restore icon you see in the disc's main window (after which the
computer will start from the disc without you needing to hold C). Or,
you can use Startup Manager or the Startup Disk preference pane to select the Install disc.
Choose a language, click the arrow button to continue, then choose Reset Password from the Utilities menu (or from the Installer menu, if using Mac OS X 10.3.9 or earlier). Tip: If you don't see this menu or menu choice, you're probably not started from the CD yet.
The default keyboard layout is U.S. English while started from the
installation disc. If you use a keyboard layout other than U.S English,
use the Input menu (the flag icon on the right side of the menu bar) to
select the desired layout before typing a new password.
Select your Mac OS X hard disk volume.
Select the user name of your original administrator account.
Do not select "System Administrator (root)". This is actually the root
user. You should not confuse it with a normal administrator account.
If you received an OS X install disk with your used MacBook you can change the administrator password.
1: Boot with the OS X install DVD by restarting the computer with the C key held down. You may release it when the Apple logo appears.
2: When you get to the install menu, select your language
3: Select Reset Password under the utilities menu on the menu bar.
4: When the password pane come up, click on your Hard Drive Icon,
5: Select the original administrator's user name (capitalization counts)
6: Enter a new password for this administrator account (capitalization counts).
7: Re-enter the new password to confirm.
8: WRITE IT DOWN SOMEWHERE!
9: Provide a password hint.
10: Click save.
11: Make sure you reset the home directory permissions and ACLs by clicking the reset button.
12: Reboot your Mac.
If you don't have an install disk, you will have to buy or borrow one.